/*
 * Copyright 2021 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { createContext, useContext } from 'react';

import { GitReleaseManagerError } from '../../../errors/GitReleaseManagerError';

export interface ReleaseStats {
  unmappableTags: string[];
  unmatchedTags: string[];
  unmatchedReleases: string[];
  releases: {
    [baseVersion: string]: {
      baseVersion: string;
      createdAt: string | null;
      htmlUrl: string;
      candidates: {
        tagName: string;
        tagSha: string;
        tagType: 'tag' | 'commit';
      }[];
      versions: {
        tagName: string;
        tagSha: string;
        tagType: 'tag' | 'commit';
      }[];
    };
  };
}

export const ReleaseStatsContext = createContext<
  { releaseStats: ReleaseStats } | undefined
>(undefined);

export const useReleaseStatsContext = () => {
  const { releaseStats } = useContext(ReleaseStatsContext) ?? {};

  if (!releaseStats) {
    throw new GitReleaseManagerError('releaseStats not found');
  }

  return {
    releaseStats,
  };
};
